70results about How to "Enhanced transfer process" patented technology

The invention discloses a jet type high-toughness fiber reinforced cement-based composite material and a preparation method thereof, and belongs to the technical field of material preparation. The invention provides a jet type high-toughness fiber reinforced cement-based composite material, which is prepared from the following raw materials in parts by mass: 320 to 400 parts of coarse aggregate, 220 to 260 parts of fine aggregate, 90 to 110 parts of cement, 40 to 50 parts of water, 10 to 15 parts of modified fiber, 5 to 10 parts of zeolite powder, 5 to 10 parts of polymerizing agent, 4 to 7 parts of accelerator and 2 to 5 parts of water reducing agent. The chemical bonding force of the fiber and the concrete interface is improved, meanwhile, the mechanical property of a hydration product at the interface is improved, the dispersity of the fiber in the concrete is improved, and the stress transmission and dispersion capacity of the fiber is effectively enhanced, so that the mechanical property and durability of the fiber concrete are enhanced.

The invention discloses a self-adaptive voiceprint recognition system based on a Mama model. The self-adaptive voiceprint recognition system comprises a voice acquisition module, a voice enhancement module, a voice feature extraction module, a spectrogram enhancement module, a model training module and a model decision module, according to the invention, through well-designed network architecture and algorithm optimization, high identification accuracy is ensured, and good robustness is shown; the system can keep a low equal error rate under various noise conditions and in different speaking styles, which indicates high robustness and accuracy of the system in a voiceprint recognition task; a bidirectional state space model of the Mama module can effectively capture local details and global context of voiceprints, and the recognition capability of the system on complex voice features is enhanced; the TDNN module strengthens the sensitivity of the system to time sequence features, the DenseNet module improves the transmission and fusion of the features through the dense connection of the DenseNet module, and the combination of the TDNN module and the DenseNet module effectively improves the feature extraction fineness of the Mamba module and improves the robustness of the model.

The invention relates to a lightweight target detection method fusing an attention mechanism, and belongs to the technical field of image recognition. The method comprises the following steps: firstly, making a target image data set and preprocessing; secondly, combining an MBConv structure and a CA attention mechanism to construct a CSPCAMBConv structure, and using the CSPCAMBConv structure to reconstruct a backbone network of Yolov5s; a bidirectional feature pyramid fusion module is adopted in the neck network, and feature information transmission and sharing are enhanced; besides, a scale inconsistency item and a width difference item are introduced into a loss function to balance the difference between a prediction frame and a real frame, so that the model is more sensitive to the scale difference of the target in the training process. And finally, pruning the model through sparse training to compress the size of the network model so as to obtain an optimal lightweight model. The method is suitable for an edge terminal with limited computing resources, targets of different scales can be accurately positioned under a complex background, and the problems of wrong detection and missing detection of the targets are effectively reduced.

The invention discloses a fermentation tank for standardized production of biological bacterial fertilizer, and relates to the technical field of biological fermentation, the fermentation tank comprises a tank body, a filling port, an endoscopic lens, other auxiliary pipelines and a driving device, the filling port, the endoscopic lens, the other auxiliary pipelines and the driving device are all fixedly connected to the tank body, and the fermentation tank also comprises a stable mixing maintenance assembly and a material characteristic adaptation assembly, the material characteristic adaptation assembly is arranged in the stable mixing maintenance assembly; the stable mixing maintenance assembly comprises a coating moving part for moving up and down; a wave groove and a sliding part are arranged, so that the wrapping moving part can be assisted to indirectly drive the impeller to rotate and stir and move up and down at the same time, and the mixing of a fermentation solution in the tank body can be effectively improved on the basis of uniform stirring; meanwhile, in the up-and-down moving process of the impeller, the fermentation solution in the tank body can pass through the through holes formed in the impeller, the solution mixing effect can be improved through the arrangement, and therefore favorable assistance is provided for the whole working process.

The invention discloses a broadband data oscillation positioning method and system based on a depth map neural network, and relates to the technical field of power system safety and stability analysis, and the method comprises the steps: abstracting a power grid into an undirected graph, constructing a power grid topological graph, and extracting features; performing feature fusion through residual connection and a feature pyramid, adding a full connection layer, and constructing a depth map neural network model; and inputting data, carrying out model training, and carrying out broadband oscillation positioning by using the trained model. According to the method, residual connection and pyramid feature fusion are carried out, so that the deep training capability and the feature learning capability of the graph neural network are effectively improved, and multi-scale and multi-level graph feature learning is realized; by constructing the depth map neural network model, deep features of a power grid topological structure can be learned, more accurate broadband oscillation positioning is realized, and better effects are achieved in the aspects of improving positioning efficiency, reducing positioning misjudgment, reducing information loss and improving broadband oscillation precision.

The invention discloses a spiral groove grinding wheel of an asymmetric trapezoidal turbulent flow structure and a preparation method, the spiral groove grinding wheel comprises a grinding wheel body, a spiral groove is formed in the grinding surface of the grinding wheel body, and the section of the spiral groove is rectangular; a turbulent flow structure is arranged in the spiral groove, the cross section of the turbulent flow structure is in an asymmetric trapezoid shape, and the bottom edge of the turbulent flow structure is in an arc shape and completely attached to the bottom face of the spiral groove. The turbulent flow structures are distributed at equal intervals in the spiral groove by taking the spiral groove as a guide; the asymmetric trapezoidal turbulent flow structure is additionally arranged on the surface of the spiral groove grinding wheel, the flow characteristic of grinding fluid can be improved, the absorption effect of the grinding fluid on the surface of the grinding wheel is improved, the effective flow of a grinding arc area in the grinding process is increased, and then grinding heat exchange is further enhanced.

The invention relates to the technical field of water-cooling copper mold pouring, and particularly discloses a liquid level stable bottom pouring type water-cooling copper mold aluminum alloy cast ingot preparation device and method.The liquid level stable bottom pouring type water-cooling copper mold aluminum alloy cast ingot preparation device comprises two water-cooling copper molds and a pouring cup, handles are fixedly connected to the two sides of the pouring cup, and a pouring opening and a forming cavity are formed in one side of each water-cooling copper mold; the two sprue gates and the forming cavity are correspondingly arranged; according to the cooling device disclosed by the invention, cooling water in the cooling cavity can be stirred up and down under the action of forming a plurality of flowing holes in the arc-shaped net plate, so that the cooling water sufficiently flows, the water flow speed can be increased by stirring, and the residence time of the cooling water and the inner wall surface of the cooling cavity is shortened; therefore, the cooling efficiency of the cooling water on the mold liquid in the sprue gate and the forming cavity is improved, the mold liquid can be rapidly cooled and formed under the action of the cooling water, the defects of oxide inclusion, air holes and the like in a cast ingot are avoided, the liquid level of the mold liquid is more stable during pouring, and the metallurgical quality of the alloy cast ingot is improved.

The invention discloses a silencing device for an outlet of a fire-fighting smoke exhaust fan. The silencing device comprises a mounting cylinder and a plurality of components assembled in the mounting cylinder, wherein the components comprise a smoke dust cleaning component, a heat exchange silencing component, a smoke dust collecting tank, an adsorption component and a smoke dust discharging component. The smoke cleaning assembly is located at the top of the mounting cylinder, the heat exchange silencing assembly and the smoke collecting tank are connected to the bottom of the mounting cylinder, the adsorption assembly is connected to the bottom of the heat exchange silencing assembly, and the smoke discharging assembly is connected to the bottom of the smoke collecting tank and located on the inner side of the adsorption assembly. The device forms a closed cold air through cavity, and a smoke outlet is formed in the bottom, so that effective smoke emission is ensured. In addition, the device further comprises a stirring assembly, a conveying assembly and a driving assembly which are connected with the adsorption assembly and the smoke dust discharging assembly respectively. Not only is the silencing effect remarkably improved, but also the functions of smoke cooling, dust removal and toxic and harmful substance treatment are integrated, many problems in the prior art are effectively solved, and a safe, environment-friendly and efficient smoke exhaust silencing device is provided for the field of fire protection and smoke exhaust.

The present invention discloses a multi-layer composite circuit board, comprising a base layer and a copper plate, wherein the copper plates are attached to both sides of the base layer; the base layer and the copper plates are both provided with a plurality of groups, wherein the base layer and the copper plates are arranged in sequence, and the outermost layers are all copper plates; and a heat spreader wire is inserted in the base layer. The preparation equipment comprises a pressing assembly, and the base layer and the copper plate are pressed by the pressing assembly. The wiring method performs wiring according to the shortest line principle. The present application distributes a large amount of heat generated locally inside the multi-layer circuit board by inserting a heat spreader wire in the base layer, thereby increasing the heat transfer and reducing the local temperature. Compared with the local area, the heat spreader wire increases the heat dissipation area, enhances the heat dissipation performance of the multi-layer circuit board, and reduces the impact on the working components above the circuit board. The circuits are arranged in sequence according to the shortest line principle, which ensures that the internal resistance of the circuit is minimized, is beneficial to improving the performance of the circuit board, and effectively reduces the heating of the circuit.

The utility model discloses an unequal air gap motor structure and a scroll compressor, belongs to the technical field of compressors, and aims to solve the problems that the motor efficiency is influenced and vibration and noise are caused by adopting a uniform air gap structure. According to the technical scheme, the unequal-air-gap motor structure comprises a plurality of stator punching sheets and a plurality of rotor punching sheets, stator inner holes are formed in the stator punching sheets, the rotor punching sheets are located in the stator inner holes, and a plurality of magnetic poles are arranged on the sides, close to the rotor punching sheets, of the stator punching sheets. A plurality of air gaps are formed between the sides, close to the rotor punching sheet, of the magnetic poles and the outer ring surface of the rotor punching sheet, a plurality of concave structures are arranged on the sides, close to the rotor punching sheet, of the magnetic poles, the intervals of the air gaps are unequal, and through the concave structures which are the same in shape and structure and are mutually symmetrical, the machining difficulty is reduced, and the length of the air gaps can be remarkably increased; and meanwhile, an unequal air gap structure is formed, so that the noise in the operation process of the motor is reduced, the noise in the operation process of the scroll compressor is further reduced, and the performance and the reliability of the scroll compressor are improved.

The utility model relates to chemical vapor deposition equipment technical field especially a kind of stable temperature measuring structure of DCE bottle, including: the bottle body of installation mouth configuration;Detachable connection has fixed component in the inside of the installation mouth, the inside fixed mounting of fixed component has thermocouple, the detection end of the thermocouple extends to the inside of the bottle body;Wherein, still fixed mounting has gas delivery pipe on the bottle body, the upper end of the gas delivery pipe is placed above the bottle body, in the utility model, inert gas is passed into bubble by being inhaled into the liquid in bottle body, and the physical movement of bubble is used to cause forced convection inside liquid, and this forced convection greatly accelerates the transmission process of heat from bottle wall to liquid center, so that the time of entire chemical source system to reach real thermodynamic equilibrium is effectively shortened, significantly reduces the invalid idle time of equipment due to waiting, directly improves the effective utilization rate of equipment and the overall productivity of production line.

The present invention provides an application of fermented Lactobacillus mucilaginosus IOB802 in improving memory, and relates to the field of microorganisms. The bacterial powder of fermented Lactobacillus mucilaginosus IOB802 and its postbiotics significantly increase the acetylcholine level of cognitive impairment mice and reduce the acetylcholinesterase level; and the serum superoxide dismutase is significantly increased, and the malondialdehyde level is significantly reduced. Therefore, the bacterial powder of fermented Lactobacillus mucilaginosus IOB802 and its postbiotics can alleviate the oxidative damage level of mice, thereby alleviating nerve damage, and have the effect of improving memory.

This invention discloses a spinless multi-roller cone continuously variable transmission (CVT) unit, aiming to provide a CVT unit that avoids spin efficiency loss within its gear ratio range, is easy to manufacture, has a long lifespan, and provides high torque. Its key technical features are: the transmission unit consists of a spindle, input sleeve, output sleeve, input roller, output roller, force-transmitting cone, cone mounting shaft, and speed-regulating sleeve. Power is input through the input sleeve, passing sequentially through the input roller, force-transmitting cone, and output roller, and finally output through the output sleeve. A speed-regulating sleeve is arranged on the spindle, hinged to one end of the cone mounting shaft. During speed adjustment, the orientation of the force-transmitting roller is changed by moving the speed-regulating sleeve, and other traction elements follow and maintain contact. The working surface of the force-transmitting cone is a standard conical surface, while the input and output rollers are convex curved surfaces. This invention can be used to replace the transmission unit in a traction-type CVT, enabling the transmission to achieve spinless, efficient transmission with excellent overall performance.

The utility model discloses an optical lens group and a vehicle lamp using the same. The optical lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side along an optical axis direction, the first lens is a glass lens, and the second lens and the third lens are plastic lenses. The image side surface of the first lens, the object side surface and the image side surface of the second lens and the object side surface and the image side surface of the third lens are all of aspheric surface structures; the object side surface of the first lens is a plane and the image side surface is a convex surface; the object side surface of the second lens is a concave surface and the image side surface is a convex surface; the third lens element has a concave object-side surface and a convex image-side surface. The optical lens group provided by the utility model is beneficial to miniaturization and light weight of a lamp, the production cost is reduced, better image definition and details can be obtained, and the imaging quality is high.

The invention discloses a quartz stone plate curing device, and belongs to the technical field of quartz stone plate processing. An air inlet pipe and an air outlet pipe are correspondingly arranged at the left and right ends of the heat-insulating shell; the lower supporting plate is installed in the heat preservation shell and used for supporting the quartz stone plate. A lower ventilation cavity penetrating through the left and right ends of the lower supporting plate is formed in the lower supporting plate; the upper pressing plate is installed in the heat preservation shell in a lifting mode and used for being pressed on the quartz stone plate. An upper ventilation cavity penetrating through the left and right ends of the upper pressing plate is formed in the upper pressing plate; the lifting assembly is connected between the upper pressing plate and the heat preservation shell and used for driving the upper pressing plate to ascend and descend. By means of the lifting assembly, the upper pressing plate can be switched between the upper working position and the lower working position, and feeding and discharging of quartz stone plates are facilitated; the lower supporting plate and the upper pressing plate serve as heat conduction materials, so that the heat transfer and heat preservation effects are enhanced, and the flatness of the quartz stone plate can be guaranteed; the quartz stone plate can be bounced regularly in the heat preservation process through the elastic adhesive tape, water vapor is taken away, and the curing forming quality is improved.

The invention discloses a hydrogen storage tank filled with a hydrogen adsorption material, and belongs to the technical field of hydrogen storage tanks. The hydrogen storage tank filled with the hydrogen adsorption material comprises a tank body, a tank cover is installed at one end of the tank body, a heat exchange pipe is arranged in the tank body, the two ends of the heat exchange pipe penetrate through the other end of the tank body, the heat exchange pipe is in a U shape, a plurality of cooling fins are installed on the outer side of the heat exchange pipe, and the hydrogen storage material is arranged among the cooling fins. Supporting bases are installed on the two sides of the bottom end of the tank body, a bottom box is installed at the bottom ends of the supporting bases, a limiting mechanism is arranged in the bottom box, universal wheels are installed on the two sides of the bottom end of the bottom box, one end face of the tank cover communicates with a gas inlet and outlet pipe, a valve is installed at one end of the gas inlet and outlet pipe, and a gas inlet and outlet connecting pipe is installed at one end of the valve. The thermal management efficiency of the hydrogen storage tank can be effectively improved, the problem that an existing hydrogen storage tank is poor in thermal management effect is solved, and high practical value is achieved.

The present application belongs to the technical field of environmental remediation and soil ecological engineering, and particularly relates to a modified iron biochar-humus-sulfate-reducing bacteria (SRB) composite system for realizing efficient immobilization and ecological remediation of cadmium (Cd 2+ ) in heavy metal contaminated soil. The system can enhance the stability of microbial colonies and has the characteristics of physical and biological synergistic passivation, thereby realizing long-term stabilization and ecological remediation of heavy metals.

The present invention discloses a heat dissipation device and equipment for a flameproof and intrinsically safe 5G radio frequency remote unit for mining. The device comprises: a flameproof cavity and a 5G radio frequency remote unit for mining, the flameproof cavity is sealed, the 5G radio frequency remote unit for mining is arranged in the flameproof cavity, a heat dissipation substrate is arranged on the flameproof cavity, the inner surface of the heat dissipation substrate is arranged with corresponding grooves, the outer surface of the heat dissipation substrate is arranged with heat dissipation teeth, the 5G radio frequency remote unit for mining is arranged with a circuit board, a chip is arranged on the circuit board, the chip is fully fitted with the corresponding groove, and an insulating heat conductive material is arranged on the reserved position where the chip fits with the corresponding groove. Through the above method, high-efficiency heat flow transfer can be achieved, and the volume and weight of the flameproof cavity can be reduced, the applicability of the 5G radio frequency remote unit for mining in coal mines can be improved, and the construction and operation and maintenance costs can be reduced.

The utility model relates to the technical field of circuit board processing, in particular to a current adjusting device for circuit board electroplating, which comprises an electroplating box, a portal frame is mounted in the middle of the top of the electroplating box, an electric cylinder is mounted in the middle of the top of the portal frame, and the output end of the electric cylinder is fixedly mounted in the middle of the top of a transverse plate. A rotating shaft is rotatably mounted on the side, away from the anode, of the transverse plate, a clamping assembly is arranged at the bottom of the rotating shaft, a conductive slip ring connected with the cathode of the current regulator is mounted at the top of the rotating shaft, a stirring shaft is rotatably mounted on the other side of the transverse plate, and a plurality of stirring rods are mounted below the outer side wall of the stirring shaft. The electric cylinder drives the transverse plate to ascend, the U-shaped plate can be driven to ascend, the U-shaped plate drives a circuit board to ascend to leave electroplating liquid in the electroplating box, when a worker takes the circuit board, fingers do not need to stretch into the electroplating liquid, and harm to the fingers is reduced.

The invention discloses a sewage denitrification system based on autotrophic microorganisms, and relates to the technical field of biology. The sewage denitrification system comprises a wastewater supply unit, a strain supply unit and a biological membrane unit, the wastewater supply unit and the strain supply unit are respectively connected with the biological membrane unit and can respectively supply wastewater and strains to the biological membrane unit; the biological membrane unit is loaded with a filler; the filler comprises elemental sulfur and tourmaline, the strain comprises sulfur autotrophic denitrifying bacteria and tourmaline autotrophic denitrifying bacteria. According to the sewage denitrification system constructed through flora domestication and electron transfer improvement, chemical energy required by the reaction in the autotrophic denitrification process is reduced, efficient removal of total nitrogen is realized, and the denitrification reaction efficiency under the condition of low carbon-nitrogen ratio is improved.

The present invention discloses a stirring device for aluminum oxidation, comprising a rack, the rack comprising a middle column, a left column and a right column, the left column and the right column are connected to the two ends of the middle column, the left column and the right column both comprise a motor, the motor is installed at one end of the left column and the right column close to the middle column, the shaft of the motor is connected to a stirring shaft installed inside the left column and the right column, the other end of the stirring shaft is connected to a stirring disk, and the stirring disk is installed outside the left column and the right column. In the present invention, the stirring device is installed on the rack by relying on the rack, which saves space, and the stirring device and the rack can be used at the same time, which reduces the difficulty of operation; stirring can accelerate the mixing of the solution and the uniformity of temperature and concentration, and can also promote the transfer process of the substance, which is beneficial to the electrolytic oxidation of the aluminum.

The invention discloses a GaN power tube-based low-voltage input high-power isolated power supply, which comprises a first-stage circuit and a second-stage circuit, the first-stage circuit and the second-stage circuit both adopt a GaN power tube as a main power switch in a circuit, the first-stage circuit and the second-stage circuit are connected in series, and the input end of the first-stage circuit is used as the input end of the high-power isolated power supply; the output end of the second-stage circuit is used as the output end of the high-power isolation power supply; the first-stage circuit is used for boosting an input low-voltage direct-current voltage through an interleaved parallel BOOST circuit to obtain a boosted voltage; and the second-stage circuit is used for converting the boosted voltage into a voltage required by a load by adopting an asymmetric half-bridge flyback AHB topology and then outputting the voltage, and isolating the input boosted voltage from the output voltage required by the load through a power transformer. The switching power supply provided by the invention can meet the requirements of low-voltage input, high-power output, input and output voltage isolation, high efficiency, low temperature rise and high integration.

The invention discloses a pass-type baking degumming cleaning line which comprises a conveying belt, a baking unit, workpiece bodies and a cleaning unit, bases are evenly distributed at the top of the conveying belt, rotating discs are arranged at the tops of the bases, the workpiece bodies are placed on the rotating discs, the baking unit is erected above one side of the conveying belt, and the baking unit is arranged above the other side of the conveying belt. Electric heating pipes are evenly arranged on the two sides of the interior of the baking unit, a cleaning unit is erected above the other side of the conveying belt, and a spraying pipe head is arranged at the top end of the interior of the cleaning unit. By installing the conveying belt, the base, the workpiece main body, the baking unit, the electric heating pipe, the air inlet fan, the exhaust fan, the cleaning unit, the water tank, the water guide pipe, the water pump, the spraying pipe and the spraying head, the workpiece main body to be treated is sequentially conveyed into the baking unit and the cleaning unit through the conveying belt, and the baking degumming function and the cleaning function are integrated on one device; and the overall treatment efficiency is high.

The present invention relates to the technical field of reactors, specifically to an iron core tuned filter reactor, comprising a reactor body, the upper and lower sides of the reactor body are fixedly connected with heat sinks, an iron core body is arranged inside the reactor body, and the outer walls of the upper and lower sides of the iron core body are movably plugged with U-shaped heat conductors. The fan blades are driven to rotate by a rotating shaft, thereby increasing the flow of air inside the reactor body. By increasing the flow of air inside the reactor body, the transfer and dissipation of heat can be accelerated, thereby reducing the temperature of the equipment and protecting the safety of the equipment. The rotation of the fan blades is precisely to achieve this purpose. It uses the principle of aerodynamics to discharge the hot air inside the reactor and inhale relatively cold air from the outside to form a cycle, improve the heat dissipation efficiency, reduce the power-off time of the reactor body, and facilitate the control of the temperature inside the reactor body.

The utility model discloses a kind of heat dissipation structure and vehicle of automobile wiper motor, comprising: motor shell and air-cooled component, the motor shell at least has the controller chamber for accommodating controller module, and is equipped with the end cap for closing the controller chamber;The air-cooled component is detachably mounted on the end cap, and is configured to be able to generate airflow flowing through the surface of the end cap, to dissipate heat to the end cap.The utility model is installed detachable air-cooled component on the motor shell of wiper motor, promotes the heat exchange of end cap and external environment using the airflow generated by air-cooled component, accelerates the heat transfer and emission of end cap, to reduce the surface temperature of end cap, improve the heat exchange efficiency of the internal environment of controller chamber and end cap, to ensure that wiper motor works normally.

The utility model relates to a kind of electric field activation pyrite removal wastewater total nitrogen device, belong to sewage treatment technical field, the utility model includes water distribution tank, reaction tank and effluent tank;Anode cage, cathode tube are equipped in the reaction tank, and sulphur iron ore particles are filled between cathode tube and anode cage;The power supply is connected to the cathode tube and anode cage;Water distribution tank and reaction tank between being equipped with baffle A, and the bottom of baffle A remains water flow passage A;Reaction tank and effluent tank between being equipped with baffle B;Water flow passage B is left in the left side of baffle B;The structure of the utility model makes sewage contact with sulphur iron ore under the action of electric field, and nitrate nitrogen and nitrite nitrogen can be reduced to nitrogen without biological bacteria, and nitrogen removal rate is high.

The invention discloses a closed metal type efficient heat dissipation charger shell which comprises a power supply charging mechanism, a heat dissipation protection mechanism is arranged outside the power supply charging mechanism, the power supply charging mechanism comprises a current output box, a voltage control box is arranged at one end of the current output box, and the heat dissipation protection mechanism comprises a first connecting assembly. A second connecting assembly is connected to one end of the first connecting assembly, a third connecting assembly is further fixedly installed at the end, away from the second connecting assembly, of the first connecting assembly, the first connecting assembly comprises a protective outer shell, and a first heat conduction inner shell is fixedly connected to the interior of the protective outer shell; the charger shell designed by the invention is composed of the power supply charging mechanism and the heat dissipation protection mechanism, and the heat dissipation protection mechanism can dissipate high-temperature heat generated by elements in the power supply charging mechanism in a heat conduction manner by utilizing high heat conductivity and corrosion resistance of the metal shielding cover and through the ventilation slots in the protection shell, so that the heat dissipation protection mechanism is more energy-saving and environment-friendly. Therefore, effective heat dissipation is realized.

The utility model relates to a composite heat dissipation device and a liquid cooling system. The liquid cooling system comprises the composite heat dissipation device. The composite heat dissipation equipment comprises a shell, at least one pre-cooling cavity is formed in the shell, a water blocking device is arranged in the pre-cooling cavity, so that the shell is divided into an air pre-cooling cavity and a surface cooling heat exchange cavity by the water blocking device, and liquid in the air pre-cooling cavity is isolated through the water blocking device so that airflow can penetrate through the water blocking device; the first cooling assembly comprises a filler, a water distributor and a circulating pump, at least part of the air pre-cooling cavity is filled with the filler, the water distributor is arranged in the air pre-cooling cavity, and the circulating pump is used for pumping water in the air pre-cooling cavity to the water distributor and spraying the water onto the filler, so that gas is cooled by liquid on the filler; and the second cooling assembly comprises a heat exchanger and a fan, the heat exchanger is arranged in the surface cooling heat exchange cavity, and the fan is arranged at an air outlet of the surface cooling heat exchange cavity. Therefore, the application scene universality of the product is improved, the water consumption is reduced, the heat dissipation efficiency is improved, the durability is ensured, and the application cost is reduced.

The invention relates to a high-thermal-conductivity water additive and a preparation method thereof, and belongs to the technical field of water additives. Pure natural tea saponin is adopted as a basic raw material, and a dodecyl chain is introduced under an alkaline catalysis condition to modify the tea saponin, so that tea saponin molecules can be spontaneously assembled into stable micelles in an aqueous solution, hydrogen bonds among water molecules are effectively destroyed, and the surface tension of water is remarkably reduced; the intermolecular interaction force of the modified tea saponin is enhanced, and the stability of the modified tea saponin in a high-temperature environment is enhanced. Besides, a ZIF-8 porous material is used as a carrier, a magnetic carrier easy to recover is prepared through high-temperature carbonization and confinement of magnetic substances, rich sites are provided for uniform loading of tea saponin through the high specific surface area and the regular pore channel structure of ZIF-8, and the thermal stability and the chemical stability of the material are further improved through carbonization; and through the synergistic effect of the magnetic substance and the carbonized ZIF-8, an efficient heat conduction network is constructed, and the heat conduction efficiency of the additive system is further improved.